Engineering Materials And Additive Processes Used In Automotive Engine Blocks

Abstract

In this paper we have tried to explain combined use of lesteran’s concept of automatic transmission and overdrive mechanism. In lesteran’s concept he replaced gearbox with automatic mechanical torque convertor assembly. While overdrive consists of an electrically or hydraulically operated epicycle gear train bolted behind the transmission unit which allows the engine to operate at a lower RPM for a given road speed. This allows the vehicle to achieve better fuel efficiency, and often quieter operation on the highway.